The Double-Back Light (Black) from Brunton Outdoor is a do-it-all little LED light with limitless possibilities. It features a flexible strap that can be wrapped around a bike seat post or handlebars, tent poles, tree branches, walking stick, backpack D-rings--pretty much anywhere you want it to go for signaling, emergencies (it has a built-in Emergency Flash Mode), or just plain lighting. The twin LED bulbs can deliver a steady or blinking 20 lumens of illumination for up to 80 hours. It operates using two CR2025 batteries, which are included.
Twin LED lamps
Flexible strap wraps, holds light steady
Up to 80 hours runtime